The Pattern of Glycogen Recovery in Muscles and Liver of Fish with Different Swimming Capabilities after being Caught in a Bottom Trawl
| Autor: | Yu. A. Silkin, E. N. Silkina, M. Yu. Silkin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Sprattus sprattus biology Glycogen 010604 marine biology & hydrobiology Zoology Captivity Sprat Flounder 04 agricultural and veterinary sciences Aquatic Science Carbohydrate metabolism Oceanography biology.organism_classification Polysaccharide 01 natural sciences chemistry.chemical_compound chemistry 040102 fisheries 0401 agriculture forestry and fisheries EUROPEAN FLOUNDER |
| Zdroj: | Russian Journal of Marine Biology. 46:270-276 |
| ISSN: | 1608-3377 1063-0740 |
| DOI: | 10.1134/s1063074020040070 |
| Popis: | The dynamics of glycogen recovery in the muscles and liver of the European flounder Plathichthys flesus (Linnaeus, 1758) and the European sprat Sprattus sprattus (Linnaeus, 1758) after exposure to trawl fishing has been studied. As the results show, the stress-inducing effect of fishing does not alter the glycogen content of the organs in the flounder, which leads a sedentary life, whereas a sharp decrease in glycogen is observed in the white and red muscles and the liver of the sprat, which is an actively swimming species. After capture, the dynamics of glycogen recovery in the organs of flounder has an undulatory pattern. The glycogen is completely restored within 12 h and is accompanied by a 100% survival rate of the flounder. The assumption is made that the resynthesis of glycogen in the organs of flounder occurs through the activation of carbohydrate metabolism in the liver. In sprat that had 3 h of “rest” after being caught and then placed in a 100‑liter tank to restore glycogen in tissues, a pronounced (4.5-fold) increase in the level of the polysaccharide was recorded from the white muscles, with a simultaneously low glycogen level in the liver. The glycogen compensation in the sprat possibly occurred through the reverse involvement of lactate in the polysaccharide resynthesis in the white muscles. The following additional 3-h period of rest was characterized by a significant (1.7-fold) decrease in the glycogen level in the white muscles compared to that in the previous rest period. No glycogen recovery in the sprat liver was observed throughout the entire rest period. Apparently, this organ is not involved in the polysaccharide recovery processes. The low survival rate of sprat (30%) is explained by the long exposure to stress caused by both capture and captivity in the tank, to which this “excitable” species is particularly sensitive. |
| Databáze: | OpenAIRE |
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